Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94c82ed057e7c2f97aab4c74b9434cbdf9d5067d1d414d22b68c84d46ca7e3e7' 
  AND token = 'z5u1rtSCy5hPPs/rnN0IkBT9hewmZch/z5ruHfiPjRs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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