Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '18bfd77d34582b054809b61a1d91bd3f92f9d08bbeb95cdac730de3ee6385f2b' 
  AND token = '794n/tpfJzlVwNv+XVt4RPZI7s2WVPsLvQXXieR0y9s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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