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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54ae9ff3d131f4cfb3d1c10b30a96163a5fa0f54e4b2035815f7c16ba654e5b6' 
  AND token = 'XesDCpQhxu6GN0jrtNr3OGvJKe3BfOW77DnQuCU94s0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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