SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '225549c16e7b0964d8b617a3ee4b9fa5a3c7ef0421c3bc65377810c179373809' 
  AND token = 'nGSmfT2KdoBgqNcXDt/HegoVCv+0pB12tCoh/0+09f8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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