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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11dd292e124569d4a561991ab6a905c84759e81a733f92ecce95963877a3f479' 
  AND token = 'SJGV4Uc0RT3adTzgOo8aE3kec8lhpwX8L4ZqwIbDETE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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