Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9ae98134e4f8dd13c1c8485f1f4df77c7c65d96e48bc4f3f85cebb71bc2e220' 
  AND token = 'jvCxdOpcPwfVbpwXlVWr4pvth8mq9T08rEvqaN+tj6Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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