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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '630e8d7eba10adae4865b2007f7bca960e421d2e023d476a3cc375ce0b18ad15' 
  AND token = 'OA4UuuJ0Sg9hK+788yoA0t6HicAgOqtkzsEx8ysZaCw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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