Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '633b4afa8e5cf99efbb8c78fc956f0561743d44381fd209036ecfaf5bd2cdd1c' 
  AND token = 'cDwCDfnXwZihbORkGMoSnwMnMzKfJ/syKKi763m5nnA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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