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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5a0cf7ee6bf1cb906a258f00c8617929320181d0eecaf64a148e1e26f4de08ef' 
  AND token = 'CO6TaDjriLioFKK3Dx/8ax/pENa2jkXysJPFkSeucFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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