Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57e91d6130ae5a717a7fc9afe231f384661248d5bac6c6824b08d830fd7eba0c' 
  AND token = 'CxgL9NgnedE6reFWKzjTDeUmNaIbqeq+z6nnpSK3tvA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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