Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '706e40ff05fef392aae8d8e40e22503697c74d069ef327592602468bcc5a5bfe' 
  AND token = 'I2gaYIlAhYCVAmy5UkFwKqcWjyAqte76P631jBWcHPU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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