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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2baabe95dd6fcc0a37e4fe3953871a89eee99f1e2276af5f5576ad1f9bd3d80' 
  AND token = '7Q4MEEirwD/W0GMdGejMAkFaWyBKKto3/+8O7vMr6tY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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