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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd00d601e7a71d866a164da1ffa527fa586762a914849ca7df226c4cb1fbd6c15' 
  AND token = 'JzA1Y3qoUSdKH2RkPAsSM8uRuY1+J52LC7IzuNfw/Fw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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