Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c373479677f972d69e50ab5c9c2f726f4b127e2fc01a0a1ae96efa04e5f6b70' 
  AND token = 'I/ntPNH4MP+vKnP6OsMjSQkNlgI1RRT2jYPHdVA13UA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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