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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5b734dad73812e7bf36679fa606e228f6c346c7e27c99971f564ef7739ffac92' 
  AND token = 'gBRqe1foqsG6ImjtpgaMV4lp9x7uF635JwTe/pv6h/M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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