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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f622414dc8e4327789c9685e4a446f2b7c26abe10a5d5cb0ad2fce722319437' 
  AND token = 'qmSaG9+xokpmx9Q0r5qiHFdseHzoR9YSVMAQfYbLazE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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