Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8df7cb6fac9f642089827db602b045d577cf5d6e89f0a81db400d54c4d0b8d13' 
  AND token = 'CyseKDv4+1V2fXQENAClrzu82FfbosAA0L2gv4JuSrk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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