Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f6749b8c52120d62fdbe85c2ecfc0fd410f29143e70f396280fb4b98c3aef05' 
  AND token = 'gFH/0CYef1i5dUp8e0sJ2QO6JnwrLhQbi7w1seCFisU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}