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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f4ec0e22eaa3286476ddff45ea38b9ec8aebc4d6dcb74e1ecd3058d7e37d82d5' 
  AND token = 'HbsWz03umbXpP2epRpw6dgNrjLKBv7Yix5wN5eI0IwU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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