Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1063f81287f27a74c3ba2d4906c9d55c1e9fc4557f76dd0223d87db657734f13' 
  AND token = '/8GNdmO7QvdHIaGlpq1t62S581FAbxwAvG2V5CoVYSk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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