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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '131537b5973e66f1141e8fe9d28b9c64c865c4c2893b535df28914a9b1355fa7' 
  AND token = 'HLINg11PHatmsjWPoZhJmOZyBYmfaE57IIj4uM3Ooec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00081

JSON explain

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