SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2225a141d2fec83bfb196bce1bd62898d1ce1219b4b1ca7095902f74d55566c6' 
  AND token = 'OGOYlC3i+zRjW5OURz31VrLKCYcZwvMqm3qayMYyIds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}