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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69a1993505476b303d414dab6c5aa3f014823e92f6d0851cdf71d7e488729fa4' 
  AND token = 'Sgf+omG9k+xhJfdmZ7NS4k9Fhl2yTJQ66TJ4VKKr20M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}