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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '184510bd0983115f25f61c96edc7577dedd5c4942598a26a6211a515067b0f59' 
  AND token = 'tZ0Y415BsduTAjFJQ6ilIPdjl4nDpb6LmZv4xIDe46Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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