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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '564627f8725572a70fa52e3b44c7211106a95bf23feee9891f913dc9967440f0' 
  AND token = 'L7VPye0MpR3m0wWLOFSCeTVqi/4s/tAdGRlfnXKJFM4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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