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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '11554f9ed57b0312e74e612b8d05445f1f8d5a906e943f0e02abacc119c2828e' 
  AND token = 'GMpkU3SdasSv+5l8j30O8L/7Tgu6L22nSVIB4pCuqv8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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