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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64a798f73b3d4c4b43a49be341154658d1380102e344ce867c740ea258914c41' 
  AND token = '92/karIyfIIe9jAb+dOLbwb9+vAR+4pWpATvMFrVRgs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00786

JSON explain

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