SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eeed2f3d451382ddf3c978da907fb058d00b8d2aaa468377151b248462d50458' 
  AND token = 'MhRF/j6+Iv3aK+jI0xx6rPltLVYd/502gY0nGKZ+mYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}