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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2abc95ba8bc9f33fbdb9751f8c2d0e6b1c95e9797a8693232ea01bd67cdedc8' 
  AND token = 'hAC9d5BcCCCEw/m0v+OKWlNN4C0AYoHx1YW+chGNqF4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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