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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de0a3522d58b5b28830e583fd5e3ddf89212e71ed49c143c8d7cb0feef80ffd7' 
  AND token = 'tEUuG6/NW1ptJ8L2dQ5buZHz/Dsm6M3gWVIpDz0hPn0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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