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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ca6f4fcc477c59dd8ef49d9bd649b5b5fd29bb84a98e62b3e717e0ff82982cc' 
  AND token = 'Ged7ECYqTtICG8PeMiHglvjmHQDV5jG892Y5Ret4t6U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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