Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea1ba37ff9395ac448236088e5a5114751a6e1d53a600c89fbd5881073d58083' 
  AND token = 'YEuwxYQ4Dsioezg15DNzrjGnI2ogNuHA9/LjChKcUtg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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