Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '221076e30ac72e3d01ce065d9e733923fcfe331b65854b3dd9dad2b04ca48da3' 
  AND token = 'Iq07gWxTJwfi11s9k0PofRiduASmsoV+Cx6BGC8PhBk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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