Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93021b6f72d5965923edb1aec574e2043e1de00195872a7beefc769b89f8edb7' 
  AND token = 'hH0oNehQGuDak0Mtst2ae5yIlFMpCBjrVSLdcKGNalc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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