Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5381af621bbda6c3f9eba418e58d1c196f285df65b446439341fac50a64bf9e7' 
  AND token = 'RJdn0TaG/64n129MCtFNH2Pl2qo/owU9TWxMwwCFNis=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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