Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae28b2c73951a8fc4185d16abe09261271a915e69560349edbaaa465beb18ba0' 
  AND token = 'OPM1ot0mv8psPzhmO2I0Xp91ImUgoJEtMmpiG69j3+I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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