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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bafe174593d2abca8ff8e07524908f43c0dcd190e5e6ccc46cfb6f6c6356c7ea' 
  AND token = 'u4LRfDssCMfLRLpwF2jHifMdi8ftY2SUru4VZdRmcsk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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