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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dd45d0d1ea5ce46780b3cebcdbabee10685cf5bd70be7ef136f86dc1e1c743bf' 
  AND token = 'A4faNMthfoutNJvXXeryfsX6kYJMjNThW9r3ALhKWUM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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