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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eba4a411fdcbbbb90b53c1a425833422d625ce64647ba384fcdd79cefb9754c9' 
  AND token = '7T6m4GHobqyMjxy9Wac3ljYagz198M8GF/90YrcqyLs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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