Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f34a41d1292c917ff364c7d473efd1eda3b0166aa2e6b867b7c9149dc75bc0b' 
  AND token = 'xmL1ObgF5tPxA23eJFNVWrJPefXax6adzzOrg+lb28I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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