Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0e021bb872ce7512e12f842f2a82718c2ed86331a6b33cbaf23259cbbe289e58' 
  AND token = 'chgAcFnFPtrIsr5B/+9URpGwbN+AdXIms72QxxOyCfA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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