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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b5a8f675ddb3a89bb60aa21c65f1a0f4c13001c1675096828ddfd31a0f9d7ca' 
  AND token = 'bkmWXF3W4R7P47956XETjy55D9CpzSwFzJ+iFN8B3So=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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