Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '56323b23f42cdb7cda7e4067c75b4c948e3ebfece10ea9dcefcb340f55fce8be' 
  AND token = 'AASmBQVpXSoT/Fq51lmEa94Cm0Z0eBMt/acdCWrR+pk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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