Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a838f7830e5c2d1b40900e996714bd4296c20ce0e47b0c95123c6a8bdb93c32' 
  AND token = 'Q2npLdxF7fpEf6vWDBrmF1fuAtPLNymYkJTwDl7mir8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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