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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '54b642a53143f4f162923cdb95c67be92b176ba3cad0cac2d613ddc5cb21c753' 
  AND token = 'MTyYye4PZePDBHZw8rNLWbmFPh4YK2o/r8Y9qyk5zcs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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